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Search Results for Vacuum Bottoms
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  • Vacuum Bottoms 
    The 1050 or 1100 F+ pitch which remains after a vacuum flasher removes vacuum gasoil from atmospheric bottoms. This thick residue has no direct use unless it meets asphalt specifications. Many refineries need to blend it into heavy fuel oil. The more fort
  • Vacuum Unit 
    A distillation column run at a pressure below the level of the atmosphere in order to separate atmospheric residue into vacuum gasoil and vacuum bottoms. See VACUUM FLASHER.